It is a low end OCXO - uses AT cut crystal. 15V @ 300 mA. Warm-up time is 6 minutes max for .1 ppm. Other specs as indicated in previous emails.
Has NO EFC. BR On Sun, Sep 28, 2014 at 7:26 PM, Tom Van Baak <[email protected]> wrote: > There were two responses to Dave's question (TCXO and OCXO) and perhaps > neither is correct. I don't have a 8720D VNA myself and Dave wisely doesn't > want to spoil his calibration seals by opening up his instrument to take a > look inside. So here's my guess based on the clues. > > "Agilent 8719D, 8720D, and 8722D Network Analyzers Data Sheet" > http://literature.cdn.keysight.com/litweb/pdf/5964-9133E.pdf > > Base spec: > Stability 0 °C to 55 °C ±7.5 ppm C > Per year (aging) ±3 ppm C > Option 1D5: > Stability 0 °C to 55 °C ±0.05 ppm C > Per year (aging) ±0.5 ppm C > > "Installation Note 8719D, 8720D, and 8722D Network Analyzer > Option 1D5 High Stability Frequency Reference Upgrade Kit" > http://literature.cdn.keysight.com/litweb/pdf/08720-90318.pdf > > High-stability frequency reference output (Option 1D5) > Frequency: 10.0000 MHz > Frequency stability (0 °C to 55 °C): ±0.05 ppm > Daily aging rate (after 30 days): <3 x 10–9/day > Yearly aging rate: 0.5 ppm/year > Output: 0 dBm minimum > Nominal output impedance: 50 ohms > > To me, these specs are a bit better than all XO and most TCXO I've seen > used in test equipment. But the specs are a bit worse than most OCXO I've > run across. So which is it, TCXO or OCXO? The next clue is the attached > photo found at: > > "Agilent 08753-60158 Opt. 1D5 for 8753D/E/ES" > > http://www.ebay.com/itm/151256172424 > > So we're looking for the specs for a Corning oscillator, P/N MC599X4. I > didn't find much on the web (one link called it a "controlled oscillator"). > Does anyone have information on this? It looks too large for a XO or TCXO. > MC might be McCoy. Or, if MC indicates MCXO (Microcomputer Compensated > crystal Oscillator) then that would nicely explain the shape/size and why > the specs are in between a really good TCXO and a not so good OCXO. > > Some photos of the inside of a MCXO (not necessarily the one in question) > here: > http://design.ecs.psu.edu/2.0/Design/design_images/MCXO1.jpg > http://design.ecs.psu.edu/2.0/Design/projects2.html (scroll down to MCXO) > > /tvb > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
